Drop box



FIG. 1 is an left front perspective view of a drop box showing our new design, with the right front perspective view being a mirror image thereof;

FIG. 2 is a front elevation view thereof,

FIG. 3 is a left side view thereof, with the right side view being a mirror image thereof;

FIG. 4 is a rear view thereof; and,

FIG. 5 is a top plan view thereof.

The bottom view forms no part of the claimed invention. The broken lines of even length shown in the drawings illustrate portions of the drop box that form no part of the claimed design. 

CLAIM The ornamental design for a drop box, as shown and described. 